US4023327A - Control system for package making machine - Google Patents

Control system for package making machine Download PDF

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Publication number
US4023327A
US4023327A US05/693,266 US69326676A US4023327A US 4023327 A US4023327 A US 4023327A US 69326676 A US69326676 A US 69326676A US 4023327 A US4023327 A US 4023327A
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United States
Prior art keywords
tube
signal
operated
feeder
feed
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Expired - Lifetime
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US05/693,266
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English (en)
Inventor
Charles J. Simmons
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Package Machinery Co
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Package Machinery Co
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Publication date
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Priority to US05/693,266 priority Critical patent/US4023327A/en
Priority to JP14947676A priority patent/JPS52150191A/ja
Application granted granted Critical
Publication of US4023327A publication Critical patent/US4023327A/en
Priority to JP19338581U priority patent/JPS57117304U/ja
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/98—Determining the joining area by using markings on at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18—Registering sheets, blanks, or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38—Impulse heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Definitions

  • This invention relates to machines for making filled packages, and deals more particularly with package making machines of the type wherein a tube of packaging material is sealed periodically along longitudinally spaced lines extending transversely of the tube and is supplied with charges of product introduced to the tube between successive transverse seal formations.
  • control system of this invention is herein shown and described, by way of example, in association with a package making machine of the type commonly referred to as a vertical form, fill and seal machine wherein the tube is made in the machine by folding a web of packaging material and sealing its overlapped side edges.
  • a package making machine of the type commonly referred to as a vertical form, fill and seal machine wherein the tube is made in the machine by folding a web of packaging material and sealing its overlapped side edges.
  • the invention is not necessarily limited to such application and may find utility in other types of packaging machines, such as those in which the tube of packaging material is preformed apart from the packaging machine or formed by the packaging machine in some other manner.
  • bag is usually used to refer to the container produced by the machine in question and as so used it is intended to be generally synonymous with other terms such as "package”, “pouch” or “envelope” which might have been equally as well chosen for the purpose.
  • the tube is made by folding a web of sheet material into a tube with overlapped longitudinally extending side edges, and sealing the overlapped side edges to one another by a longitudinal seam sealer
  • the longitudinal seal forming operation is commonly performed during the return stroke of the end sealer when the tube is stationary relative to the remainder of the machine.
  • the end seal operation and the longitudinal seal operation occur in different portions of the bag making cycle and each requires an associated minimum amount of time to effect acceptable seals. That is, each bag making cycle must include a first minimum amount of time for making satisfactory end seals and a second minimum amount of time for making a satisfactory longitudinal seal, and each cycle cannot be shortened in time beyond the sum of such two minimum time periods.
  • the general object of this invention is to provide a control system for a vertical form, fill and seal packaging machine, or other packaging machine of the transverse tube sealing kind, having the capability of bag length adjustment by means of nothing more than a manually rotatable knob or similar easily manipulatable control element.
  • a further object of the invention is to provide a bag length adjusting means such as aforesaid whereby the bag length may be adjusted while the machine is running so as to allow the effect of a given change in the adjustment to be immediately observed.
  • Another object of the invention is to provide a bag length control means for a packaging machine such as aforesaid whereby changes in the bag length and machine speed (bags per minute) may be varied, without tools, while the machine is running and without causing problems in the sequencing of the tube feeding and sealing functions.
  • the tube feeding function and the sealing function that is, the end sealing function and the longitudinal sealing function, if any
  • the sealing function is timewise interlocked to the tube feeding function so that, in each bag making cycle, the sealing function is initiated immediately upon the ending of the tube feeding function regardless of the length of time devoted to the tube feeding function. Therefore, changes in the tube feed time per bag making cycle and changes in the speed of the machine may be made without resulting in timewise overlaps in or gaps between the tube feeding and sealing functions.
  • Another object of the invention is to provide a packaging machine control system of the foregoing character whereby the machine is or may be operated on a product demand basis -- that is, on the basis of a bag being made only in response to operation of the product feeder to deliver a product charge to the tube, thereby effecting a "no product -- no bag" result.
  • the invention resides in a machine for making filled packages from a tube of packaging material by periodically feeding charges of product to the tube and sealing the tube, between product charges, at spaced points along its length along transversely extending seal lines, the machine having an electrical control system whereby the length of tube fed past the transverse sealer during each bag making cycle corresponds to a tube feed signal the duration of which may be varied by adjustment of a manually manipulatable control knob. More particularly, the invention resides in the control system for the machine including a means for generating a bag making cycle initiate signal and a tube feed timer for generating a tube feed signal in consequence of the cycle initiate signal, the timer having an associated manually operable knob or other similar means for selectively varying the duration of its tube feed signal.
  • an operation circuitry which controls the operation of the tube feeder and of the transverse sealer in response to the cycle initiate signal and the tube feed signal so that at the start of the cycle initiate signal the transverse sealer is shifted to its nonoperated condition, at the start of the tube feed signal operation of the tube feeder is begun, and at the end of the tube feed signal operation of the tube feeder is stopped and the transverse sealer shifted to its operated condition. Consequently, the start of the sealing function is locked to the end of the tube feed function regardless of the duration of the tube feed signal.
  • control system may also include a feed delay timer for providing a delay of manually adjustable duration between the start of the cycle initiate signal and the start of the tube feed signal to assure that the end sealer, and longitudinal seam sealer, if any, is moved free of the tube before tube feed is initiated in each bag making cycle, such tube feed delay sometimes being desirable, especially at high machine speeds.
  • the invention still further resides in a photoregistration bag length determining circuit being included in the control circuitry for the machine.
  • the control system operates in the same manner as previously described except that in each machine cycle stopping of the tube feed and initiation of the transverse sealer operation is normally controlled in response to the detection of a registration mark by an associated photodetector.
  • the first bag length determining circuit is set to act as a backup to the photoregistration circuit and to stop tube feed in a given bag making cycle should the photoregistration circuit fail to do so.
  • FIG. 1 is a schematic diagram illustrating a vertical form, fill and seal package making machine and an associated control system embodying the present invention.
  • FIG. 2 is a diagram illustrating the nature of various signals appearing in various places in the control system during each bag making cycle of the apparatus of FIG. 1 when the photoregistration bag length determining circuit is inoperative.
  • FIG. 3 is a diagram similar to FIG. 2 but showing the nature of signals appearing at various places in the control system of the machine of FIG. 1 during each bag making cycle when the photoregistration bag length determining circuit is in operation.
  • FIG. 1 the invention is there shown in association with a packaging machine of the vertical form, fill and seal variety.
  • a web 10 of heat sealable packaging material is supplied from a roll or other source thereof (not shown) and is guided to a folder 12 which folds the web into a downwardly extending tube 14 having overlapped longitudinal side edges indicated at 16.
  • the tube 14 is fed through the machine by a tube feeder 17 having a pair of intermittently operated feed belts 18, 18 located on opposite sides of the tube.
  • Each belt 18 is trained over two rolls 20, 20 spaced from one another along the length of the tube and positioned so that one run of the belt is engageable with the outer surface of the tube.
  • the tube engaging run of each belt may be porous and backed up by a vacuum chamber so as to attract the tube to the belt by the vacuum to increase the grip between the tube and belt.
  • the construction of the tube feeder is not, however, essential to the invention and various types of tube feeders other than that illustrated may be employed without departing from the invention.
  • the longitudinal sealer 22 for heat sealing to one another the overlapped side edges 16 of the tube.
  • the longitudinal sealer 22 has operated (closed) and non-operated (open) conditions. In its operated condition, it is pressed against the overlapped side edges 16 of the tube, while the feed of the tube by the feeder is stopped, and against a backup bar or other stationary part inside of the tube to react the force of the sealer, and a shoe heated by an electrical resistance heater or other heat source applies heat to the overlapped edges 16 to weld them to one another. In its non-operated condition, the sealer 22 is released from the tube to allow the tube to be moved past it.
  • transverse or end sealer 24 which operates to flatten the tube 14 along a zone extending transversely of the tube and to heat seal the two opposite flattened sides of the tube to one another along such zone to form the top and bottom end seals of packages.
  • One such package is indicated at 26, its bottom end seal at 28 and its top end seal at 30.
  • the sealer 24 may take various different forms and in the present invention is taken to be one of a well known type which during each operating cycle forms the top end seal of one package and the bottom end seal of the next package and cuts the tube between such two seals to separate the terminal package from the remainder of the tube.
  • the end sealer 24 may consist of two jaws located on opposite sides of the tube 14 and movable between closed and opened positions relative to one another. Further, one of the jaws may carry three horizontal electrical impulse or ribbon heaters oriented parallel to one another and extending transversely of the tube.
  • the two jaws In the operating condition of the sealer the two jaws are first moved towards one another to flatten the tube and subsequently the three heaters and electrically impulsed, the heat generated by two of the heaters serving to form the two associated end seals and the heat from the third heater, positioned between the other two heaters, serving to sever the tube.
  • the two jaws In the non-operated condition of the sealer, the two jaws are moved from one another to release the tube and to thereby allow it to be moved by the tube feeder 17 relative to the sealer 24 to bring a new seal zone into alignment with it.
  • a cyclicly operable product feeder 32 feeds charges of product into the tube 14 through its open upper end.
  • the charges of product are delivered between successive operations of the end sealer 24 so that the resultant packages produced by the machine are filled with the product.
  • control circuitry constituting the essence of the present invention, which controls the operation and timing of the tube feeder 17, end sealer 24, longitudinal seam sealer 22 and feeder 32 in a novel and improved way and in particular in such a way as to allow easy adjustments in the relative timings of the components to effect controlled changes in the length of the bags 26 made by the machine.
  • the control system there illustrated includes a drive motor 34 which drives the input member of a variable speed reducer 36, the reducer 36 being one which is manually or otherwise adjustable to vary the speed ratio between its input and output members.
  • the output drive member of the reducer 36 is drivingly connected to the product feeder 32 by a first power transmitting train indicated by the broken line 38, and it is also connected to the tube feeder 17 by a second power transmitting train indicated by the broken line 40.
  • a clutch 42 selectively engageable or disengageable to make or break the driving connection between the speed reducer and the product feeder.
  • the clutch 42 is engaged with the result that the feeder 32 is continuously driven through repeated cycles of operation to cyclicly discharge charges of product into tube 14.
  • a clutch/brake mechanism 44 In the second power transmitting train 40 is a clutch/brake mechanism 44.
  • This mechanism includes both a clutch for making and breaking the driving connecting between the speed reducer 36 and the tube feeder 17 and a brake for braking the motion of the tube feeder.
  • the mechanism 44 has a drive mode and a brake mode. In the drive mode, the clutch portion of it is engaged to drivingly connect the tube feeder 17 to the speed reducer 36 and the brake portion of it is released. In the brake mode, the clutch portion is disengaged to break the driving connection between the speed reducer and the tube feeder and the brake is engaged to stop and hold the tube feeder against movement.
  • the clutch portion of the mechanism 44 is operated by a clutch solenoid 46 and the brake portion is operated by a brake solenoid 48. Power for the solenoid 46 is supplied by a clutch solenoid driver 50 and likewise power for the solenoid 48 is supplied by a brake solenoid driver 52.
  • the operating means comprises a solenoid 54 for operating the longitudinal seam sealer 22 and a solenoid 56 for operating the end sealer 24, and a seal solenoid driver 58 having its output connected to both of the solenoids 54, 56.
  • the solenoids 54 and 56 are shown directly connected to sealers 22 and 24, such direct connection is not essential and instead one or both of the solenoids may operate hydraulic valves for controlling hydraulic cylinders which in turn shift the sealers 22 and 24 between their operated and non-operated conditions.
  • the timing of the operating of the tube feeder 17 and of the sealers 22 and 24 is controlled by timing and logic circuits responsive to "cycle initiate” signals each signalling the start of a new bag making cycle.
  • the source of such cycle initiate (CI) signals is a switch 60 operated by a cam 62 in the power transmitting train 38 driving the feeder 32, the cam 62 being driven through one revolution per cycle of the feeder 32, a CI signal, therefore, being produced at a given point in each cycle of the feeder.
  • the switch is repeatedly operated to produce a time-spaced train of CI signals.
  • An on/off switch 64 controls transmission of the CI signals to the remaining control circuitry. When the switch 64 is closed, the CI signals are fed to both a feed delay timer 66 and a logic circuit 68.
  • each CI signal triggers the timer 66 to produce a feed delay signal T1.
  • the duration of the T1 signal is in turn variable, preferably from a zero amount of time to some selected maximum amount of time, by an associated means 68, for example a potentiometer, having a manually operable control knob 70.
  • the feed delay signal T1 from the feed delay timer 66 is fed to a second similar timer 72, a tube feed timer, which in response to the end of the signal T1 is triggered to produce a tube feed signal T2 the interval of which is adjustable by an associated means 74 having a manually operable control knob 76.
  • the tube feed signal T2 from the timer 72 is supplied to the logic circuit 68.
  • the logic circuit 68 operates to produce FEED, BRK and SEAL signals supplied respectively to the clutch solenoid driver 50, the brake solenoid driver 52 and the seal solenoid driver 58 in the manner shown in FIG. 2.
  • the BRK signal is the inverse of the FEED signal. At the start of each cycle, the FEED signal is off and the BRK signal on to hold the tube feeder 17 stationary, and the SEAL signal is off to hold the sealers 22 and 24 in their open or non-operated conditions.
  • the FEED signal goes on and the BRK signal off to start the tube feeder in motion.
  • the FEED and BRK signals thereafter remain unchanged, and the tube feeder remains in motion, until the end of T2 at which time the FEED signal is again turned off and the BRK signal on to stop the tube feeder.
  • the SEAL signal is turned on to shift the sealers 22 and 24 to their operated or closed conditions.
  • the sealers thereafter remain closed until the end of the cycle, signalled by the appearance of a new CI signal, at which time the SEAL signal is turned off to cause the sealers 22 and 24 to be shifted from their operated to their non-operated or open conditions, and thereafter a similar new bag making cycle is executed.
  • the purpose of the feed delay timer 66 and its associated feed delay signal T1 is to provide a time delay at the beginning of each new bag making cycle assuring time for the sealers to move away from and release the tube before the tube is moved by the tube feeder. At low machine speeds (low rates of bags per minute) such initial time delay may not be required and, in this event, the associated adjustment knob 70 may be set to provide a zero time delay T1. Furthermore, in some applications no feed delay may be required under any circumstances, and in such case, the feed delay timer 66 may be omitted from the control system and the tube feed timer 72 made directly responsive to the CI signals.
  • the purpose of the tube feed timer 72 and its associated tube feed signal T2 is to control the length of time the tube feeder 17 is driven during each bag making cycle. This in turn controls the length of tube fed by the tube feeder during each cycle and accordingly determines the length of bag made in that cycle. Therefore, by varying the duration of the signal T2, by simple setting of the manual knob 76, the length of the bags produced by the machine may be readily varied.
  • circuitry which responds to the cycle initiate (CI) and to the tube feed (T2) signals to operate the tube feeder and the sealers in the manner discussed above is referred to in FIG. 1 as the operation circuitry, and various different forms of such circuitry may be used without departing from the scope of this invention. Also, much of such circuitry, such as the logic circuit 68 and the drivers 50, 52 and 58, as well as the associated timers 66 and 72, may if desired, be implemented as solid state devices of relatively low cost and small size.
  • the system of FIG. 1 also includes an optionally usable photoregistration means for enabling the length of bags produced to be determined by registration marks 78, 78 printed at regularly spaced intervals along the length of the web 10 from which the packages are made.
  • This photoregistration means includes a light source 80, associated photodetector 82 and a related photoregistration circuitry 84.
  • Part of the circuit 84 is a switch 86 having a manually operable knob 88 through which the remainder of the circuit 84 may be enabled or disabled with regard to the sending of signals to the logic circuit 68.
  • the switch 86 When the switch 86 is turned on, the circuit 84 operates to supply a mark detect or PR signal to the logic circuit 68 each time a new registration mark 78 is moved into registry with the photodetector 82.
  • FIG. 3 The operation of the system of FIG. 1 with the photoregistration circuit enabled is shown in FIG. 3.
  • the operation is smaller to that with the photoregistration circuit disabled, as shown by FIG. 2, except that in each cycle the turning off of the tube feeder 17 and the turning on (that is, the shifting to their operated states) of the sealers is signalled by the first to occur of either the normal ending of the tube feed signal T2 or the appearance of the PR signal.
  • the tube feed timer 72 is set, by the knob 76, to produce a tube feed signal T2 having such duration as to normally end, as indicated by the broken line 90 in FIG. 3, a short time after the appearance of a PR signal.
  • the logic circuit 68 operates to terminate the then running tube feed signal T2 in response to the leading edge of a PR signal. Therefore, in each bag making cycle, the PR signal appears first and turns off the tube feed signal T2, which in turn turns off the tube feeder to determine the length of the bag made during that cycle. If during a given cycle, a PR signal does not appear, as for example because of a missing registration mark 78 on the web, the bag under production will nevertheless be terminated shortly after the expected appearance of the missing PR signal by the normal ending to the associated T2 signal, thereby producing a generally acceptable bag having only a slightly longer length than desired.
  • the cycle initiate signals each of which initiates a new bag producing cycle, since they are derived from the feeder 32, cause the bag producing system to have an "on demand" character whereby bags are produced only when needed to package products supplied by the feeder 32. If the feeder does not supply product charges to the tube 14, as for example, because of the clutch 42 being disengaged, no CI signals are produced and consequently no bags are made.
  • the cycle initiate signals do not, in keeping with the broader aspects of the invention, have to be related to the operation of a feeder such as the feeder 32 and may in some other way be generated in response to the need or demand for a bag.
  • product charges might be introduced to the tube of packaging material by an operator manually repeatedly dumping a charge into the upper end of the tube, and each time such a charge is dumped into the tube, the operator might thereafter produce a cycle initiate signal by manually operating a switch provided to produce such signal.
  • cycle initiate signals may readily be envisioned.
  • the speed of the machine in bags produced per minute is readily varied by adjusting the variable speed reducer 36, and as such speed adjustments are made the time delays T1 and T2 are likewise readily adjustable by the knobs 70 and 76 to provide them with such durations as required at the different machine speeds to produce bags of desired length.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
US05/693,266 1976-06-04 1976-06-04 Control system for package making machine Expired - Lifetime US4023327A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US05/693,266 US4023327A (en) 1976-06-04 1976-06-04 Control system for package making machine
JP14947676A JPS52150191A (en) 1976-06-04 1976-12-14 Wrapping device
JP19338581U JPS57117304U (fr) 1976-06-04 1981-12-28

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US05/693,266 US4023327A (en) 1976-06-04 1976-06-04 Control system for package making machine

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127976A (en) * 1977-08-24 1978-12-05 Atlas Powder Company Method and apparatus for making dual compartment containers
DE2838375A1 (de) * 1977-09-07 1979-03-08 Sapal Plieuses Automatiques Einwickelmaschine
US4144693A (en) * 1976-06-16 1979-03-20 Toyo Co., Ltd. Food packaging method and apparatus
US4316566A (en) * 1980-07-17 1982-02-23 R. A. Jones & Co. Inc. Apparatus for registration and control for a moving web
US4391079A (en) * 1980-08-21 1983-07-05 Hayssen Manufacturing Company Control system for cyclic machines
US4423585A (en) 1981-08-20 1984-01-03 Rexham Corporation Package forming apparatus and method
EP0150292A2 (fr) * 1984-01-24 1985-08-07 Ludwig Schwerdtel GmbH. Dispositif pour le remplissage dosé d'un matériau très visqueux
US4566249A (en) * 1984-03-15 1986-01-28 Ernst Schwerdtel Apparatus for the dosed filling of highly viscous material
US4712357A (en) * 1985-10-28 1987-12-15 Fmc Corporation Computer controlled horizontal wrapper
US4744202A (en) * 1986-11-14 1988-05-17 Milliken Research Corporation Apparatus and method for maintaining uniform, registration in a packaging machine
US4750313A (en) * 1985-12-20 1988-06-14 Rovema Verpackungsmaschinen Gmbh Packaging machine for the manufacture, filling and closing of bags and a method for operating such a machine
US4754593A (en) * 1985-12-28 1988-07-05 Tokyo Automatic Machinery Works, Ltd. Bag-making-and-filling packaging apparatus
US4817366A (en) 1986-12-17 1989-04-04 International Paper Company High capacity package seal, sever, and brick apparatus and method
WO1994010038A1 (fr) * 1992-10-30 1994-05-11 Hayssen Manufacturing Company Appareil d'emballage assurant la mise en forme, le remplissage et la fermeture etanche
US5400565A (en) * 1992-06-29 1995-03-28 Pacmac, Inc. Vertical form, fill and seal packaging machine for making recloseable product filled bags
US5505037A (en) * 1992-06-29 1996-04-09 Pacmac, Inc. Vertical form, fill and seal machine for making recloseable bags
EP0705759A1 (fr) * 1993-06-23 1996-04-10 Nihon Tetra Pak K.K. Machine de remplissage et materiau de conditionnement
EP0759397A1 (fr) * 1995-08-18 1997-02-26 ISHIDA CO., Ltd. Dispositif de scellement longitudinal pour machine d'emballage et de fabrication de sacs
US5727366A (en) * 1997-04-10 1998-03-17 Milliken Research Corporation Registration control
US5768852A (en) * 1992-06-29 1998-06-23 Pacmac, Inc. Vertical form, fill and seal machine, components and method for making reclosable bags
US5930983A (en) * 1992-06-29 1999-08-03 Pacmac, Inc. Form, fill and seal packaging machine with bag squeezer and method
US6029428A (en) * 1992-06-29 2000-02-29 Pacmac, Inc. Convertible form, fill and seal packaging machine
EP0999130A2 (fr) * 1998-11-03 2000-05-10 Klockner Bartelt, Inc. Machine d'emballage possédant un mode d'opération continu et intermittant
US6233902B1 (en) * 1998-07-22 2001-05-22 Ishida Co., Ltd. Packaging machine
WO2001081175A1 (fr) * 2000-04-20 2001-11-01 Tetra Laval Holdings & Finance Sa Machine pour emballer du materiau dans un tube hermetiquement clos longitudinalement et transversalement
FR2815938A1 (fr) * 2000-10-26 2002-05-03 Bosch Gmbh Robert Procede et dispositif de commande en fonction de marques imprimees, dans une machine d'emballage
US6408599B1 (en) * 1998-01-20 2002-06-25 Ishida Co., Ltd. Method of and device for adjusting position for cutting bags and packaging machine incorporating same
US20030000179A1 (en) * 2001-06-27 2003-01-02 Ishida Co. Ltd. Longitudinal bag manufacturing and packaging apparatus
US6553744B1 (en) 1992-06-29 2003-04-29 Pacmac, Inc. Packaging machine
US6691491B2 (en) 2000-08-18 2004-02-17 Pacmac, Inc. Vertical form, fill and seal packaging machine
US20090266034A1 (en) * 2005-01-10 2009-10-29 Tetra Laval Holdings & Finance S.A. Device and a method for controlling a twist of a tube
CN102700732A (zh) * 2012-05-29 2012-10-03 天津工业大学 间歇式包装机颗粒物料下料传动系统及其控制方法
ES2478421A1 (es) * 2014-02-21 2014-07-21 Bossar Packaging, S.A. Máquina envasadora con dispositivo compensador de errores de impresión del film
US20180244412A1 (en) * 2015-09-09 2018-08-30 Tetra Laval Holdings & Finance S.A. Packaging machine and method for producing packages from a sheet of packaging material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104601U (fr) * 1979-01-12 1980-07-22

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US3546835A (en) * 1969-02-20 1970-12-15 Milliken Industrials Corp Tube forming apparatus and method
US3589095A (en) * 1968-05-09 1971-06-29 Hayssen Mfg Co Method and apparatus for registering two separate webs of wrapping material

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US3916598A (en) * 1974-10-15 1975-11-04 Du Pont Synchronized tube forming and filling machine for forming chub packages

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589095A (en) * 1968-05-09 1971-06-29 Hayssen Mfg Co Method and apparatus for registering two separate webs of wrapping material
US3546835A (en) * 1969-02-20 1970-12-15 Milliken Industrials Corp Tube forming apparatus and method

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144693A (en) * 1976-06-16 1979-03-20 Toyo Co., Ltd. Food packaging method and apparatus
US4127976A (en) * 1977-08-24 1978-12-05 Atlas Powder Company Method and apparatus for making dual compartment containers
DE2838375A1 (de) * 1977-09-07 1979-03-08 Sapal Plieuses Automatiques Einwickelmaschine
US4316566A (en) * 1980-07-17 1982-02-23 R. A. Jones & Co. Inc. Apparatus for registration and control for a moving web
US4391079A (en) * 1980-08-21 1983-07-05 Hayssen Manufacturing Company Control system for cyclic machines
US4423585A (en) 1981-08-20 1984-01-03 Rexham Corporation Package forming apparatus and method
EP0150292A2 (fr) * 1984-01-24 1985-08-07 Ludwig Schwerdtel GmbH. Dispositif pour le remplissage dosé d'un matériau très visqueux
EP0150292B1 (fr) * 1984-01-24 1987-08-05 Ludwig Schwerdtel GmbH. Dispositif pour le remplissage dosé d'un matériau très visqueux
US4566249A (en) * 1984-03-15 1986-01-28 Ernst Schwerdtel Apparatus for the dosed filling of highly viscous material
US4712357A (en) * 1985-10-28 1987-12-15 Fmc Corporation Computer controlled horizontal wrapper
US4750313A (en) * 1985-12-20 1988-06-14 Rovema Verpackungsmaschinen Gmbh Packaging machine for the manufacture, filling and closing of bags and a method for operating such a machine
US4754593A (en) * 1985-12-28 1988-07-05 Tokyo Automatic Machinery Works, Ltd. Bag-making-and-filling packaging apparatus
US4744202A (en) * 1986-11-14 1988-05-17 Milliken Research Corporation Apparatus and method for maintaining uniform, registration in a packaging machine
US4817366A (en) 1986-12-17 1989-04-04 International Paper Company High capacity package seal, sever, and brick apparatus and method
US4881360A (en) 1986-12-17 1989-11-21 International Paper Company High capacity package seal, sever, and brick apparatus and method
US5768852A (en) * 1992-06-29 1998-06-23 Pacmac, Inc. Vertical form, fill and seal machine, components and method for making reclosable bags
US6047521A (en) * 1992-06-29 2000-04-11 Pacmac, Inc. Vertical form, fill and seal machine for making reclosable bags
US5400565A (en) * 1992-06-29 1995-03-28 Pacmac, Inc. Vertical form, fill and seal packaging machine for making recloseable product filled bags
US5505037A (en) * 1992-06-29 1996-04-09 Pacmac, Inc. Vertical form, fill and seal machine for making recloseable bags
US6029428A (en) * 1992-06-29 2000-02-29 Pacmac, Inc. Convertible form, fill and seal packaging machine
US5930983A (en) * 1992-06-29 1999-08-03 Pacmac, Inc. Form, fill and seal packaging machine with bag squeezer and method
US6553744B1 (en) 1992-06-29 2003-04-29 Pacmac, Inc. Packaging machine
WO1994010038A1 (fr) * 1992-10-30 1994-05-11 Hayssen Manufacturing Company Appareil d'emballage assurant la mise en forme, le remplissage et la fermeture etanche
EP0705759A4 (fr) * 1993-06-23 1996-07-17 Tetra Pak Japan Machine de remplissage et materiau de conditionnement
EP0705759A1 (fr) * 1993-06-23 1996-04-10 Nihon Tetra Pak K.K. Machine de remplissage et materiau de conditionnement
EP0759397A1 (fr) * 1995-08-18 1997-02-26 ISHIDA CO., Ltd. Dispositif de scellement longitudinal pour machine d'emballage et de fabrication de sacs
US5727366A (en) * 1997-04-10 1998-03-17 Milliken Research Corporation Registration control
US6598367B2 (en) * 1998-01-20 2003-07-29 Ishida Co., Ltd. Device for adjusting position for cutting bags and packaging machine incorporating same
US6408599B1 (en) * 1998-01-20 2002-06-25 Ishida Co., Ltd. Method of and device for adjusting position for cutting bags and packaging machine incorporating same
US6233902B1 (en) * 1998-07-22 2001-05-22 Ishida Co., Ltd. Packaging machine
EP0999130A3 (fr) * 1998-11-03 2001-08-16 Klockner Bartelt, Inc. Machine d'emballage possédant un mode d'opération continu et intermittant
EP0999130A2 (fr) * 1998-11-03 2000-05-10 Klockner Bartelt, Inc. Machine d'emballage possédant un mode d'opération continu et intermittant
WO2001081175A1 (fr) * 2000-04-20 2001-11-01 Tetra Laval Holdings & Finance Sa Machine pour emballer du materiau dans un tube hermetiquement clos longitudinalement et transversalement
US6691491B2 (en) 2000-08-18 2004-02-17 Pacmac, Inc. Vertical form, fill and seal packaging machine
FR2815938A1 (fr) * 2000-10-26 2002-05-03 Bosch Gmbh Robert Procede et dispositif de commande en fonction de marques imprimees, dans une machine d'emballage
US20030000179A1 (en) * 2001-06-27 2003-01-02 Ishida Co. Ltd. Longitudinal bag manufacturing and packaging apparatus
US20090266034A1 (en) * 2005-01-10 2009-10-29 Tetra Laval Holdings & Finance S.A. Device and a method for controlling a twist of a tube
US7827768B2 (en) * 2005-01-10 2010-11-09 Tetra Laval Holdings & Finance S.A. Device and a method for controlling a twist of a tube
CN102700732A (zh) * 2012-05-29 2012-10-03 天津工业大学 间歇式包装机颗粒物料下料传动系统及其控制方法
CN102700732B (zh) * 2012-05-29 2014-08-06 天津工业大学 间歇式包装机颗粒物料下料传动系统及其控制方法
ES2478421A1 (es) * 2014-02-21 2014-07-21 Bossar Packaging, S.A. Máquina envasadora con dispositivo compensador de errores de impresión del film
US20150239595A1 (en) * 2014-02-21 2015-08-27 Bossar Packaging, S.A Packing Machine Compensating for Errors in Film Printing
US20180244412A1 (en) * 2015-09-09 2018-08-30 Tetra Laval Holdings & Finance S.A. Packaging machine and method for producing packages from a sheet of packaging material

Also Published As

Publication number Publication date
JPS52150191A (en) 1977-12-13
JPS57117304U (fr) 1982-07-21

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